Calcium is necessary for building strong bones and teeth and may help prevent osteoporosis. Vitamins D and K are necessary for the body to absorb Calcium. Osteoporosis is a disease associated with calcium loss from bones causing them to weaken and possibly fracture. A healthy diet with adequate calcium and regular exercise builds and maintains good bone health and may reduce the risk of osteoporosis later in life.

Multivitamins are among the most commonly used dietary supplements in the United States. These vitamins can contribute to a person's total intake of certain vitamins and minerals, which is a plus if that person doesn't eat a healthy and well-balanced diet. Centrum is one brand of multivitamin, and the manufacturer offers formulations for adults in general, as well as formulations made specifically for women or men.

The health benefits of vitamin E come from its antioxidant properties. Antioxidants remove free radicals — the unstable compounds that damage the cell structure. Immunity levels improve when vitamin E is consumed. Another important benefit of vitamin E is that it reduces cholesterol and the risk of developing cancer.